breuer



- 11, 1936. A. A. BfiEuER METHOD OF AND APPARATUS FOR SPRAYING INSEGTIC IDES 2 Sheets-Shet 1 Original Filed Deg. 9, 1953' [Maya/914a Aug. 11, 1936. A. A. BREUER IETHOD OE AND APPARATUS FOR SPRAYING INSECTICIDES 2 She'et-Sh'e'et 2 Original Filed Dec. 9, 1933 fewer Reissued Aug. 11, 1936 UNITED STATES METHOD OF AND APPARATUS FOR SPRAYING INSECTICIDES Adam A. Breuer, Chicago, Ill. Original No. 1,990,165, dated February 5, 1935,

Serial No. 701,617, December 9, 1933.

plication for reissue October 17, 1935, Serial No.

This invention has to do with a method of and apparatus for spraying insecticides, and contemplates 9; novel apparatus for creating spray by compression, and a novel method of compression spraying wherein the heat generated by compression is utilized to warm the insecticide prior to its discharge to the atmosphere.

The apparatus of the present invention will herein be described as preferably a small, compact portable unit which may be held in the hand of an operator or may be put on a support, such as a floor, table, shelf or the like, during use.

An object of the present invention is 'to provide a compact, readily portable and usable sprayer, which will discharge liquid by compressor action, in the form of a fine mist.

Another object of the invention is the provision 01v :3. portable hand sprayer wherein liquid is discharged by rotary compressor action.

A further object of the invention is to provide an apparatus having a: compressor chamber into which the liquid is admitted and from which the liquid is discharged to the atmosphere in the form of a spray or mist.

A still further object of the invention is to provide a novel method of mixing fluid, such as insecticides, deodorants, and the like, with air,

compressing the mixture and utilizing the heat generated by compression for warming the mixture.

- Another and further object of the invention has to do with a novel method of compressing a mixture of air. and fluid, such as insecticides or the like, for spray discharge, in such manner that the heat absorbed by the compressor walls during the compression of the mixture,,is utilized for warming the mixture prior to its discharge to the atmosphere. v

The invention further contemplates the use of a compressor including a chamber with rotary compressor means therein, for compressing and discharging therefrom, air and liquid delivered to such chamber.

The invention also contemplates the delivery of fluid to a chamber wherein such fluid is discharged as a spray, with compressor action;

Generally speaking, the apparatus of the present invention contemplates a unit, consisting of motor; motor casing, rotarycompressor and liquid container, all arranged in compact, readily usable form.

The invention further contemplates an apparatus having a compressor chamber, with means for delivering to such chamber the conpended claims.

, 6 Claims.- (01. 299-97) tents of the liquid container wherein such liquid is discharged from the chamber with compressor action. I

The invention further contemplates the .provision of timer actuated means whereby the apparatus maybe set to operate for any predetermined length oftime, and, at the expiration of such time, action automatically ceases.

The above, other and further objects of the invention will be apparent from the following description, accompanying drawings and ap- The accompanying drawings illustrate a sprayer, constructed in accordance with the principles of the present invention, and with which the method of the present invention may be practiced, and the views thereof are asfollows: t

Figure 1 is a central, vertical sectional view through a sprayer unit constructed in accordance with the principles of the present invention, showing in elevation the handle and ,the casing for the timer mechanism.

Figure 2 is an enlarged, horizontal, sectional View taken substantially in the plane indicated by the line IIII of Figure 1.

Figure 3 is a bottom plan view of the timer mechanism, showing the snap switch for controlling operation of the motor, and in full lines showing the parts in oii position.

Figure 4 is a top plan view of the clock mechanism utilized herein for operating the timer mechanism of the present invention.

Figure 5 is a view, partially in elevation and partially in section, of certain details of the timer mechanism.

Figure 6 is a view, partially in elevation, and partially in section, of another. part of the timer mechanism.

Figure '7 is an axial sectional view through certain portions of the timer mechanism of the' sition, The parts A, B, C, and D are preferably s'oarranged as to lie in axially vertical alignment, to insure compactness and ready portability, and convenience in use.

To the motor casing A is attached a housing,

, or casing I, for the timer mechanism, and integrally connected with such housing is a-handle 2, through which are passed electrical conductors 3a to the switch mechanism within the housing l.

The motor 3 is provided with the usual'motor shaft 4 supported in bearings'S and 3, which shaft is vertically disposed and the lower end of which passes through the bearing 6 carried in the compressor housing B.

The compressor housing is provided with a compressor chamber E, which isillustrated as formed surrounded by a cast iron bushing I, about which the compressor casing B is cast. The lower end of the motor shaft 4 extends into the compressor chamber E where the lower end is slotted at 8 to engage a pin 9 in a rotor I9. The rotor consists of a cylindrical member having a bore through it to receive the motor shaft 4 and through which bore the pin 9 extends for cooperating with the slotted end of the motor shaft With the pin in the rotor l0 serving as a driving connection between the motor and the rotor.

The rotor is provided with a plurality of vertically disposed slots I l, 7 of which three are shown, which intersectv radii of the rotor and extend inwardly from the surface of the rotor to points near the rotor center. In these slots are vanes I2 for movement outwardly under centrifugal action, and the outer ends of which vanes are curved to conform with the contour of the inner surface of the bushing 1 of the compressor chamber. These vanes or blades move outwardly under centrifugal action whenever the rotor is rotated by the motor and move inwardly as the blades approach that portion of the motor chamber which is substantially in contactjwith a portlon of the side surface of the rotor.

The rotor is mounted eccentrically with respect to the center of the compressor chamber as is well understood in rotary compressors of the type illustrated.

Preferably, the compressor chamber E is somewhat elliptical in outline with the rotor eccentrically arranged.

lhe bottom of the compressor chamber E is formed by a plate |3-which is bolted against the bottom of such chamber by suitable bolts extending into the compressor casing or casting B. Bolted to the underside of the plate I3, by bolts H, is a threaded cap Ii adapted tojthreadedly receive the threaded neck I; of the liquid container D. a

Extending througha of the compressor casing B and the bushing: I, is a duct forming the air inlet for the compressor chamber E. A

pipe I8 extends through suitable openings in the cap I! and plate l3, and enters the duct 'II outwardly of the bushing for supplying fluid contents of the container D tothe. duct. The outer end of the duct is enlarged and threaded to receive air inlet nipple I! which has lateral openings 2|] in it and a screw 2| threaded in its end for regulating air passage through the openings 20. A knurled end 22 is applied to the screw 2| for ease in manipulation of the same.,

Another duct 23, constituting the discharge duct, is formed in the bushing I and extends through a part of the compressor casing B and terminates in an enlarged threaded opening 24, into which is threaded a part 25 of a. discharge nozzle. 4

Thedischarge nozzle comprises the part 25 and a swivel end portion 24 which is connected to the part 25 by means of a bolt 21 so that the part 23 may be swung about the bolt as an axis, to discharge in various angular directions. wi h recharged mixture issuing from the tip 28 of the switch, designated generally at 29 and actuatedv pillars 38. 1

to the sleeve 39, and at its outer end is attached walls 36 and 31. Attached to the bull wheel 42,

spect to the axis of the sprayer. The extremity of the part 26 is provided with a tip 28 for forming the sprayer discharge of the mixture discharged from the compressor chamber E as the apparatus is used. 5 Whenever the motor 3 is actuated, the rotor I0 is rotated. and the air passing into the compressor chamber E is compressed and discharged through the tip 28 of the nozzle, carrying with it some of the fluid which is drawn into the compressor chamber E through the pipe l3. During such compression of the air, heat is generated, which heatis absorbed by the metal of the compressor chamber. The inflowing fluid from the container D absorbs some of such heat, thus tendl5 ing to cool the compressor chamber and in turnbecomes warmed by such heatso that the disnozzle, is heated to some extent. This feature is important in connection with the use of insecticides, as it has been found that if the insecticide is heated to some extent, its killing power is increased many fold.

In order that the sprayer may be actuated for any predetermined length of time, without requiring the attention 'of an operator, there is provided timer mechanism which may be set at any predetermined length of time, within the limits of such mechanism and during such setting, the sprayer is in use.

Interposed in electrical conductors between the conductor 3a and the motor 3 is a snap A sleeve 33 surrounds the spindle 33, and extends through an opening in the back plate 31 where an arm- 4ll/is secured to the sleeve outwardly of the back plate 31. Formed as a part of the sleeve 39 is a ratchet 4|. Rotatably mounted on the sleeve 39, behind the ratchet 4|, is a bull wheel 42, having ratchet teeth 43 in its periphery for meshing with a gear 44 carried on a shaft 45.

A coiled spring 46 is connected at its inner end 55 to a post 41 connected to the front and back on pivots 48, are pawls 49 adapted to engage the ratchet wheel 4|.

The usual balance wheel 50 is provided as well as other parts necessary to make an effective clock mechanism.

'Disposed against the outer face of the cover 34, is a dial 5| having indlcia thereon, such as 32, for indicating the length of operation of the 5 time mechanism when the handle 35 is moved so that its pointer 35a overlies any of such indicia.

The arm 40, secured to the sleeve 33, has an extension, with a notch in it, bears against the pin 3| which is carried by the arm 32,-under cer- 70 tain conditions. v

' In order to limit the movement of the arms 32 and 40, in clockwise direction, as observed in Figs.

3 and 5, a stop pin 53 is provided.

The arm 32 is fastened or otherwise secured to 7 5 sleeve 33.

move the snap switch lever 30 from.the oif position, which is the full line position of Fig. 3, to the on the dotted line position setting of the handle 35, the lever has been moved to oil position and the electrical circuit to the motor opened, thus stopping operation of the'motor.

It may sometimes happen that the operator may desire to stop the motor in a shorter length of time than that for which the clock mechanism This may be accomplished by manually turning the handle in counterclockwise direction, as viewed in Fig. 1. this manner causes rotation of the spindle 33 and with it its arm 32. The fact that the arm 32 carries the pin 3|, which engages the lever 30 of will move the snap switchto though the clock mechanism reason, it is desired to stop the operation of the sprayer before the time arrives for cessation thereof by the clock mechanism. a

When the handle 35 is actuated to set the clock mechanism, the arms and 40 are, as viewed in Figs. 3 and 5, moved in counterclockwise direction, a distance commensurate with the movement of the handle 35, in clockwise in Fig. 1. When such movement a 10 or 15-minute setting, the pin the arm 32, will leave the bifurcated lever However, as the arms 32 and 40 are moved" eventually enter the bifurcated lever 30 and move it to open position.

The rotor it! rotates in counterclockwise direction as viewed in Fig. 2.

The fluid within the container D is, when the apparatus is working, drawn through the pipe (3 into the-compressor chamber E and there mixed with the air drawn in through the nipple l3. The air is compressed and the air and fluid mixture Turning the handle in only fluid from the container D is admitted to the chamber E resulting in a "heavy spray discharge. The more air admitted, the "finer or lighter will be the resulting spray. Thus, by suitable adjustment of the screw desired consistency may be eiiected.

causes creation of smaller droplets in the spray,

admitted causes larger droplets. The smaller droplets are utilized in killing flying insects such as flies, while the larger droplets are better for killing crawling insects such as roaches, bugs and the like. he observed that the size of the compressor. An advantage is derived by use of the angularly adjustable discharge of the timer and switch mechathe motor may be cut out of circuit, manually, while the clock is running, has

its advantages.

able to move the sprayer from one room to anto another there is bodily engagement of the rotor against such part of the well, For the purpose of clarity, the angular arrangement of the inlet and outlet from what it actually is, as illustrated in Figure 2.

'The invention is claimed as follows:

1. An insecticide sprayer of the air compressor type, including in combination a motor casing, a

said container receiving means, an electric motor in said motor casing and compressor means in said compressor chamber, connections between the motor and said compressor means for operating the latter, air inlet means to For instance, it might be desirthe creation of 35 actuated to close 7 said compressor chambe means providing fluid communication between the interior of said container and said air inlet means prior to entrance of air into said compressor chamber, means for directing air and fluid from said compressor chamber, and means for regulating the amount or air delivered to said chamber, by said air inlet means. 2. A single unit hand portable insecticide sprayer of the in combination, a container for insecticide, means providing a compressor chamber, compressor means in said chamber, means for supplying air to said chamber, discharge means communicating with said chamber, means providing fluid entry from said container into said air supply means prior to the entry of air into said chamber whereby said fluid is drawn into said air supply solely by suction, and manually operable means for re ulating at will the amount of air delivered to said chamber by said air supply means, said container, chamber and compressor means being assembled as a unit structure for compactness and portability.

3. In a method of killing insects by vapor contact in a closed space such as a room, the steps of mixing air and undiluted liquid insecticide at room temperature, thereafter delivering such mixture into a compressor chamber and therein mechanically compressing the air to atomize and heat the liquid insecticide, and then by the compressed air projecting the atomized insecticide into the atmosphere of said space.

air compressor type, including 4. In a method 01 killing insects by vapor conspace such as a room, the continuously moving a injecting liquid insecticide at room temperature into said moving air stream prior to and thereafter compressing the air to atomize and heat the insecticide and discharge it to the atmosphere ofsaid space in the tact in an enclosed steps of, confining and stream of air,

air compression,

form of spray.

5. A hand portable insecticide sprayer, com- 1 prising a unitary compact assembled relation a rotary a compressor chamber provi said compressor, munication with pressor, valve means in the passage of air insecticide having into said air inlet an air structure having in compressor including ded with a suction intake and a discharge outlet, a motor for driving inlet conduit in comthe suction int ake of the comconduit opening insects by vapor cona room, the

steps of, confining and continuously moving a 2 stream of air, then solely by suction injecting liquid insecticide at room temperature into said moving air stream prior to air compression, and

thereafter compressing mosphere of said space in the air heat the insecticide and discharge it to the at- 30 the form of spray.

ADAM I to atomize and A. BREUER. 

